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Briefkasten vs LinkAce: catalog facts
Briefkasten	LinkAce
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 license.
Web, Self-hosted	Web, Self-hosted
Self-hostable with Docker files included Also offered as a hosted instance	Automatic archiving via the Internet Archive Regular dead-link monitoring with notifications
Setup needs a database and an OAuth provider configured No tagged releases	Archived copies depend on the Internet Archive rather than local storage Not meant to replace everyday browser bookmarks
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License: MIT	License: GPL-3.0
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.